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content / public / browser / file_system_access_permission_grant.h [blame]
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_PUBLIC_BROWSER_FILE_SYSTEM_ACCESS_PERMISSION_GRANT_H_
#define CONTENT_PUBLIC_BROWSER_FILE_SYSTEM_ACCESS_PERMISSION_GRANT_H_
#include "base/functional/callback.h"
#include "base/memory/ref_counted.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "content/common/content_export.h"
#include "content/public/browser/global_routing_id.h"
#include "third_party/blink/public/mojom/permissions/permission_status.mojom-forward.h"
namespace base {
class FilePath;
}
namespace content {
// A ref-counted permission grant. This is needed so the implementation of
// this class can keep track of references to permissions, and clean up state
// when no more references remain. Multiple FileSystemAccessHandle instances
// can share the same permission grant. For example a directory and all its
// children will use the same grant.
//
// Instances of this class can be retrieved via a
// FileSystemAccessPermissionContext instance.
//
// FileSystemAccessPermissionGrant instances are not thread safe, and should
// only be used (and referenced) on the same sequence as the PermissionContext
// that created them, i.e. the UI thread.
class CONTENT_EXPORT FileSystemAccessPermissionGrant
: public base::RefCounted<FileSystemAccessPermissionGrant> {
public:
using PermissionStatus = blink::mojom::PermissionStatus;
virtual PermissionStatus GetStatus() = 0;
// Returns the path this permission grant is associated with. Can return an
// empty FilePath if the permission grant isn't associated with any specific
// path.
virtual base::FilePath GetPath() = 0;
// The display name for path. If empty, basename of path should be used.
virtual std::string GetDisplayName() = 0;
// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
enum class PermissionRequestOutcome {
kBlockedByContentSetting = 0,
kInvalidFrame = 1,
kNoUserActivation = 2,
kThirdPartyContext = 3,
kUserGranted = 4,
kUserDenied = 5,
kUserDismissed = 6,
kRequestAborted = 7,
kGrantedByContentSetting = 8,
kGrantedByPersistentPermission = 9,
kGrantedByAncestorPersistentPermission = 10,
kGrantedByRestorePrompt = 11,
kMaxValue = kGrantedByRestorePrompt
};
// Passed to |RequestPermission| to indicate if for this particular permission
// request user activation is required or not.
enum class UserActivationState { kRequired, kNotRequired };
// Call this method to request permission for this grant. The |callback|
// should be called after the status of this grant has been updated with
// the outcome of the request.
virtual void RequestPermission(
GlobalRenderFrameHostId frame_id,
UserActivationState user_activation_state,
base::OnceCallback<void(PermissionRequestOutcome)> callback) = 0;
// This observer can be used to be notified of changes to the permission
// status of a grant.
class Observer : public base::CheckedObserver {
public:
virtual void OnPermissionStatusChanged() = 0;
};
// Per base::ObserverList, it is an error to attempt to add an observer more
// than once.
void AddObserver(Observer* observer);
// Does nothing if the observer isn't in the list of observers.
void RemoveObserver(Observer* observer);
protected:
friend class base::RefCounted<FileSystemAccessPermissionGrant>;
FileSystemAccessPermissionGrant();
virtual ~FileSystemAccessPermissionGrant();
void NotifyPermissionStatusChanged();
private:
base::ObserverList<Observer> observers_;
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_FILE_SYSTEM_ACCESS_PERMISSION_GRANT_H_